CN104653817A - One-inlet three-outlet four-way reversing spherical valve - Google Patents

Abstract

The invention provides a one-inlet and three-outlet four-way reversing ball valve, which includes a valve body, a valve cover installed at the upper end of the valve body, a valve stem installed inside the valve body, and a ball valve core installed at the lower end of the valve stem. The part of the valve stem passing through the valve cover is fixedly fitted with a handwheel, and a fixing nut is installed on the top of the valve stem. The valve body is evenly provided with four installation holes with internal threads along the circumference of the outer surface, and four valve ports It is installed in the installation hole through the external thread, and there is a medium channel in the middle of the ball valve spool. The medium channel is composed of a vertical hole and an arc-shaped groove. The diameter of the vertical hole is the same as that of the valve port. The diameters are equal, the thickness of the arc-shaped groove is equal to the diameter of the valve port, the arc angle of the arc-shaped groove is 90°, and the plane where the medium channel is located is perpendicular to the valve stem. The invention has a simple structure, can realize the function of one valve replacing four valves, and makes the pipeline connection simple in the pipeline flow path with one inlet and multiple outlets.

Description

A one-inlet three-outlet four-way reversing ball valve

technical field

The invention relates to a ball valve, in particular to a one-inlet and three-outlet four-way reversing ball valve.

Background technique

The ball valve is mainly used to cut off or connect the medium in the pipeline. Because of its simple operation and small flow resistance, it has been widely used in various fields in recent years. At present, the four-way reversing ball valve used when changing the medium flow channel through the ball valve is the "LL" type reversing valve, that is, by rotating the ball valve spool 90°, the medium flow direction is switched once to realize two in and two out of the flow channel. But in reality, when one inlet is needed and three directions are used as outlets, this valve is not enough to meet the performance. If multiple globe valves are used as valves to cut off the flow, resources will be wasted and the interface will be complicated.

Contents of the invention

The object of the present invention is to provide a four-way reversing ball valve with multiple reversing functions and simple structure.

The object of the present invention is achieved like this: comprise valve body, the bonnet that is installed on valve body upper end, the valve stem that is installed in valve body and the ball valve spool that is installed in valve stem lower end, described valve stem passes through the valve cover The upper part of the fixed sleeve is equipped with a hand wheel, and the top of the valve stem is installed with a fixed nut. The valve body is evenly provided with four installation holes with internal threads along the outer surface of the body, and the four valve ports are installed in the installation holes through external threads. Here, there is a medium channel in the middle of the ball valve spool, and the medium channel is composed of a vertical hole and an arc-shaped groove. The diameter of the vertical hole is equal to the diameter of the valve port, and the arc-shaped groove The thickness of the groove is equal to the diameter of the valve port, the arc angle of the arc-shaped groove is 90°, and the plane where the medium channel is located is perpendicular to the valve stem.

The present invention also includes such structural features:

1. Set sealing rings at the contact between the valve body and the valve cover, the contact between the valve cover and the valve stem, and the contact between the valve body and the valve port.

Compared with the prior art, the beneficial effect of the present invention is that the present invention adopts a valve core with a special structural principle, and the direction of the valve core is driven by turning the hand wheel to realize the conduction and cut-off of one inlet of the ball valve and three outlets respectively, which is suitable for In the pipeline with one inlet and three outlets, that is, only one inlet is needed, and every time the valve core is rotated by 45°, it can realize the conduction or cutoff with the pipelines in the other three directions, and in the pipeline connection, the structure of the present invention is simple , more reversing functions, easy to install and maintain, can realize the function of one valve replacing four valves, and at the same time, in the pipeline flow channel with one inlet and multiple outlets, the pipeline connection can be simple, one valve can be used for multiple purposes, and the cost can be saved.

Description of drawings

Fig. 1 is a sectional view of the present invention;

Fig. 2 is a conduction sectional view of the a-b flow channel of the present invention;

Fig. 3 is a conduction sectional view of the a-c flow channel of the present invention;

Fig. 4 is a conduction sectional view of the a-d flow channel of the present invention;

Fig. 5 is a cut-off view of the ball valve of the present invention;

Fig. 6 is a sectional view of the ball valve spool of the present invention;

Fig. 7 is a three-dimensional structural schematic view of the valve core of the present invention.

Among them: 1 is nut, 2 is washer, 3 is hand wheel, 4 is valve cover, 5 is valve body, 6 is ball valve core, 7 is valve port, 8 is sealing ring 1, 9 is sealing ring 2, 10 is Sealing ring 3,11 is valve stem.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

1 and 2, the present invention includes a valve body 5, a valve cover 4 installed at the upper end of the valve body 5, a valve stem 11 installed inside the valve body 5, and a ball valve core 6 installed at the lower end of the valve stem 11, specifically It is said that the valve stem 11 is reliably connected with the keyway provided on the ball valve spool 6 through the key provided on the bottom end. Install the fixing nut 1, specifically, the handwheel 3 is set on the upper end of the valve stem 11 through a spline to achieve a fixed connection with the valve stem 11, and is fastened together with the washer 2 through the fixing nut 1, when the handwheel 3 rotates Drive the rotation of the valve stem 11, and then drive the rotation of the ball valve core 6. The valve body 5 is evenly provided with four mounting holes with internal threads along the circumference of the outer surface, and the four valve ports 7, 12, 13 and 14 pass through the outer surface. The thread is installed in the installation hole, and the middle position of the ball valve spool 6 is provided with a medium channel, and the medium channel is composed of a vertical hole and an arc-shaped groove, and the diameter of the vertical hole is the same as the diameter of the valve port. equal, the thickness of the arc-shaped groove is equal to the diameter of the valve port, the arc angle of the arc-shaped groove is 90°, and the plane where the medium channel is located is perpendicular to the valve stem. Sealing rings 10, 9 and 8 are respectively provided at the contact between the valve body 5 and the valve cover 4, the contact between the valve cover 4 and the valve stem 11, and the contact between the valve body 5 and each valve port, that is, the valve body 5 and the valve cover 4 They are connected together by threads, with a sealing ring 10 in the middle, and the sealing ring 9 is sleeved on the valve stem 11. During the tight connection process between the valve cover 4 and the valve body 5 through threads, the sealing ring 9 is squeezed on the shaft of the valve stem 11. On the shoulder, the entire connection not only realizes the sealing of the connection between the valve cover 4 and the valve body 5, but also realizes the tight fit between the valve stem 11 and the ball valve core 6. The four mounting holes set on the valve body 5 are respectively connected with the four valve ports. 7, 12, 13 and 14 are tightly connected together by threads, and a groove is provided at the end of each valve port connected to the valve body 5, and a sealing ring 8 is housed therein.

The ball valve spool 6 of the present invention adopts a special structural principle to realize the one-to-one reversing of the four-channel ball valve. , so as to connect adjacent two valve ports, on the same cross-section of the arc-shaped groove, there is a through hole at an angle of 135° at the centerline as shown in Figure 6, and its aperture size is the same as the diameter of the valve port 7.

The flow path conversion process of the present invention is: Fig. 2 shows the working position of the ball valve spool 6 when the a-b flow path is conducted, by turning the handwheel 3, the ball valve is reversed, when the ball valve spool 6 turns to the position shown in Fig. 3 In the working position, the a-b flow passage is cut off, and the a-c flow passage is turned on. Turn the hand wheel 3 again. When the core 6 was in the working position of Fig. 5, the ball valve was closed.

Claims (2)

1. one kind one is entered three and goes out formula four-way reversing globe valve, it is characterized in that: comprise valve body, be arranged on the valve gap of valve body upper end, be arranged on the valve rod of valve inner and be arranged on the ball valve core of valve rod lower end, in the part that described valve rod passes valve gap, fixed cover is equipped with handwheel, and set screw nut is installed on the top of valve rod, described valve body evenly arranges four female mounting holes of tool along outer surface circumference, four valve ports are arranged in described mounting hole by outside thread, the neutral position of ball valve core has medium channel, described medium channel is made up of vertical holes and circular groove, the diameter of described vertical holes and the equal diameters of valve port, the thickness of described circular groove equals the diameter of valve port, the arc angle of described circular groove is 90 °, and the plane at described medium channel place is vertical with valve rod.

2. according to claim 1 a kind of one enters three and goes out formula four-way reversing globe valve, it is characterized in that: arrange seal ring respectively at valve body and valve gap contacting point, valve gap and valve stem contacts place, valve body and each valve port contacting point.